SRE Technical Lead

📍 Reading / Hybrid (UK-based - mix of home, office, and client site)
🔐 Must be eligible for SC Clearance

We are seeking an experienced SRE Technical Lead to act as the technical authority for Site Reliability Engineering across complex, large-scale platforms.

This is a senior, client-facing leadership role where you will be responsible for driving reliability, availability, and operational excellence across multi-team and multi-vendor environments.

You will combine hands-on engineering expertise with strategic leadership, ensuring SRE practices are embedded across the full service lifecycle-from design through to production operations.

As the SRE Technical Lead, you will:

• Define and implement SRE strategy, standards, and best practices, including SLAs, SLOs, and error budgets


• Embed reliability principles into platform and service design from the outset


• Lead key SRE practices such as reliability reviews, operational readiness, and toil reduction


• Drive automation across monitoring, incident response, and remediation


• Act as the technical escalation point for major incidents and high-risk releases


• Lead blameless post-incident reviews and ensure continuous improvement


• Establish observability and capacity management practices using modern tooling


• Identify and eliminate systemic reliability risks and operational inefficiencies


• Collaborate with engineering, platform, security, and operations teams across multiple vendors


• Provide coaching and mentorship to engineers, raising SRE capability across the organisation

Essential experience:

• Deep expertise in Kubernetes and/or OpenShift


• Experience working in multi-cloud or hybrid cloud environments


• Strong understanding of SRE principles (SLOs, SLAs, error budgets, reliability engineering)


• Hands-on experience with observability tooling (e.g., Prometheus, Grafana, OpenTelemetry, Loki, Tempo)


• Strong knowledge of Infrastructure as Code and GitOps (e.g., Helm, Kustomize, ArgoCD, Tekton)


• Experience with CI/CD pipelines and automation


• Proven ability to operate as a technical leader in complex, multi-team environments